4P 13025 1983 88 B6 BRAKE VALVE IDENTIFICATION CHART W JE4 SUPPLY PRESSURE PROT SAFETY MODULATOR LIMITING MOISTURE EJECTOR PK BRK INVERSION PK BRK CONT VALVE 1 4 646 VALVE 1 4 18 PIPE THD SCHRADER NUMBER 1498A6 2214695 2 4 864 VALVE STMP N15759C 4 THD PORTS MR N15759C 2490710 3 4 902 VALVE STMP 284142 150 PS 1 4 PIPE THD OPT W 2303913 BW NUMBER 284142 278383 4 4 902 VALVE STMP N1178B 150 PS 1 4 1 8 PIPE THD OPT W 278383 MR N1178B 2303913 5 4 730 MODULATOR STMP 25007002 OPT W 25006504 TAGGED 25007003 ON BASIC VALVE AC 25007002 25007002 4 730 MODULATOR OPT W 25006504 AC NUMBER 25007004 25007004 6 4 644 VALVE TOP CAST 292496 BTM CAST 292492 2 THD PORTS BW NUMBER 289144 2022484 f 7 4 902 VALVE BOTTOM DRAIN TYPE BW NUMBER 281923 665643 4 902 VALVE END DRAIN TYPE W 12V HEATER BW NUMBER 284795 701150 4 902 VALVE BOTTOM DRAIN TYPE W 12V HEATER BW NUMBER 284412 716198 8 4 902 VALVE W HEATER BAKER EXPELLO 2057224 A 4 902 VALVE W HEATER BAKER NUMBER 16126 2072166 9 4 902 VALVE 1 15 16 INCH DIA X 5 INCH LG NON HEATED MONROE NUMBER DA1060 2012405 10 4 641 VALVE STMP 286364 OPT W 2022486 4 THD PORTS BW NUMBER 286364 717894 11 4 641 VALVE TAG 276581 BODY CAST 240381C LESS BUTTON 3 8 INCH SHAFT 40 PSI BW 690091 NUMBER 276581 4 THD PORTS BW BENDIX WESTINGHOUSE MR MIDLAND ROSS AC A C SPARK PLUG Q L T 1987 GENERAL MOTORS SERVICE PARTS OPERAT ONS M SB G j 09 87 4G 63 4 000 GROUP